JPH0560402U - Hair dryer - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a hair dryer that improves the response of the thermoswitch when the heater is overheated for some reason. [Structure] A heater 4 which is arranged in a ring shape in an air flow path to heat air in a housing, and a heater which is connected in series to the heater at a substantially central portion in a space surrounded by the heater. Thermoswitch 6 with reversal type thermal response plate 13
In the hair dryer provided with, the auxiliary heater 16 connected in series with the heater 4 and the thermoswitch 6 is arranged in the vicinity of the reversal type thermal response plate 13.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a hair dryer having a heater arranged in a ring shape, and in particular, having improved responsiveness of a thermoswitch that shuts off a circuit when the temperature rises abnormally.

[0002]

[Prior Art]

 A hair dryer having a heater arranged in a ring shape generally has a structure shown in FIGS.

In the figure, 1 is a cylindrical housing having a suction port 1a on one side and a discharge port 1b on the other side. Reference numeral 2 denotes a fan that is rotated by the motor 3 to take in air from the suction port 1a and generate an air flow and blow it out from the discharge port 1b. Reference numeral 4 denotes a heater, which is arranged in a ring shape in the flow path of the air flow to heat the air. Specifically, the heater support member is formed by cross-linking the support pieces 5a, 5a having a substantially U shape. It is supported by 5 turns. Reference numeral 6 denotes a thermoswitch, which is arranged in series with the heater 4 in the approximate center of the space surrounded by the heater 4. H is a handle provided in a direction orthogonal to the axial direction of the housing 1.

As shown in FIG. 6, the thermoswitch 6 is a composite in which a fixed contact side terminal 8 provided with a fixed contact 9 and a movable contact side terminal 10 are integrally molded with a space therebetween so as to be electrically insulated. Frame 7 made of resin, movable contact plate 11 with movable contact 12 at the tip and fixed to the movable contact side terminal 10 at the base end, and spring-like movable contact plate 11. It is reversible when the temperature rises and is reversibly movable.It consists of a reversing type thermal response plate 13 mounted on the contact plate 11, and it is connected to the discharge port 1b side of the heater supporting member 5 via the conductive plates 14 and 15. The movable contact plate 11 is driven by the reversing operation of the reversing type heat responsive plate 13 to cause both contacts 9 and 12 to open and close.

In this hair dryer, the heater is overheated in an abnormal situation such as the stop of the fan rotation, so that the ambient air temperature also becomes an abnormally high temperature, and the thermoswitch shuts off the circuit. Since this thermoswitch is installed in the approximate center of the space surrounded by the heater 4, even if the heater 4 is not uniformly overheated, the time until the circuit is cut off is increased. It will be almost constant.

[0006]

[Problems to be solved by the device]

 However, since the hair dryer described above has a considerable distance from the heater 4 to the thermoswitch 6, more specifically, to the reversing type thermal reaction plate 13, the thermoswitch 6 operates when the heater 4 is overheated for some reason. It takes a considerable time to do so, and therefore the responsiveness is not so good, and there is also a risk of adversely affecting surrounding members.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a hair dryer capable of improving the responsiveness of a thermoswitch when the heater is overheated for some reason. is there.

[0008]

[Means for Solving the Problems]

 In order to solve such a problem, a hair dryer according to the present invention includes a housing having a suction port on one side and a discharge port on the other side, a fan that takes in air from the suction port and creates an air flow, and blows it out from the discharge port. It has a heater that is arranged in a ring shape in the channel to heat the air, and a reversing type thermal response plate that is directly connected to the heater in the substantially central portion of the space surrounded by the heater. In the hair dryer having the above-mentioned thermo switch, the heater and the auxiliary heater connected in series with the thermo switch are arranged in the vicinity of the reversing type thermal response plate.

[0009]

[Action]

 According to this configuration, if the heater is overheated for some reason, the auxiliary heater connected in series with the heater and the thermoswitch will also be in an overheated state, and this auxiliary heater is arranged near the reversing type thermal response plate of the thermoswitch. Therefore, the reversing type thermal reaction plate can be quickly reversed.

[0010]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS. The members having substantially the same basic functions as those of the general example are designated by the same reference numerals, and detailed description thereof will be omitted.

This hair dryer is basically the same as the general example shown in FIG. 5, and is rotated by a housing 1 having a suction port 1a and a discharge port 1b on the other side and a motor 3 to suck air. A fan 2 that takes in air from 1a and creates an air flow and blows it out from an outlet 1b, a heater 4 arranged in a ring shape in the flow path of the air flow to heat the air (specifically, two support pieces 5a, 5a Is supported by a heater supporting member 5 cross-coupled with each other), and a thermoswitch 6 arranged in series connection with the heater 4 is provided at a substantially central portion in a space surrounded by the heater 4.

The thermoswitch 6 is also made of a synthetic resin frame 7 in which the fixed contact side terminal 8 provided with the fixed contact 9 and the movable contact side terminal 10 are integrally molded with a space therebetween so as to be electrically insulated. With a movable contact 12 at the tip, a movable contact plate 11 having a spring property, the base end of which is fixed to the movable contact side terminal 10, and a curved shape made of bimetal or the like are inverted at a predetermined temperature (abnormal temperature rise). It is composed of a reversing type thermal reaction plate 13 mounted on the movable contact plate 11 so as to be reversible, and discharges the heater supporting member 5 through the conductive plates 14 and 15 and the crimp terminals 17 and 18 described later. The movable contact plate 12 is fixed to the outlet 1b side, and the movable contact plate 12 is driven by the reversing operation of the reversing type heat responsive plate 13 to cause both contacts 9 and 12 to open and close.

Next, an essential part of the present invention will be described. Reference numeral 16 denotes an auxiliary heater, which is made of the same material as the heater 4 and is formed slightly longer by the reversal type thermal reaction plate 13, and both ends thereof are fixed to the first crimp terminal 17 and the second crimp terminal 18. The first crimp terminal 17 has a U-shape and the other end is fixed to the movable contact side terminal 10, and the second crimp terminal 18 has a flat plate shape and is mounted on the fixed contact side terminal 8 and is insulated. It is fixed to the sex support table 19. The first crimp terminal 17 and the insulating support base 19 are dimensioned in the height direction so that the auxiliary heater 16 is located in the vicinity of the reversing type thermal reaction plate 13. Further, the fixed contact side terminal 8 is connected to the power source via the conductive plate 15, and the second crimp terminal 18 is connected to the heater 4 via the conductive plate 14. Therefore, the auxiliary heater 16 is arranged in the vicinity of the reversing type thermal actuator plate 13 and is connected in series to the heater 4 and the thermoswitch 6 as shown in FIG. Structurally, the thermoswitch 6 and the auxiliary switch 16 form a thermoswitch block 20 including the first crimp terminal 17, the second crimp terminal 18, and the insulating support 19.

In such a hair dryer, when the fan 5 normally rotates to generate a normal air flow, the heater 4 and the auxiliary heater 16 are appropriately cooled and do not become an overheated state, and therefore the thermo switch 6 is closed. Keep up. However, if the rotation of the fan 5 is reduced or stopped due to some abnormality, the heater 4 and the auxiliary heater 16 are not properly cooled and become overheated. As a result, the reversing type thermal response plate 13 quickly reaches a predetermined temperature (abnormal temperature rise) and is reversed by the auxiliary heater 16 arranged in the vicinity, and the thermoswitch 6 is opened to shut off the circuit. ..

When a high voltage is applied to the hair dryer for some reason, an overcurrent flows in both heaters 4 and 16 to cause an overheat state. Operate.

In the thermoswitch of this embodiment, the reversing type thermal responsive plate is mounted on the movable contact plate so as to be reversible. However, the movable contact plate itself is a reversing type thermal responsive plate such as bimetal. It is also possible to omit the inverted heat-responsive plate which is a separate member.

[0017]

[Effect of the device]

 In the hair dryer of the present invention, if the heater is overheated for some reason, the auxiliary heater connected in series with the heater and the thermoswitch will also be in an overheated state, and this auxiliary heater will be located near the reversing type thermal response plate of the thermoswitch. Since it is installed, the reaction type thermal reaction plate can be quickly inverted, and the responsiveness of the thermoswitch is improved and safety is improved.

[Brief description of drawings]

FIG. 1 is a front view of an essential part showing an embodiment of the present invention.

FIG. 2 is an enlarged front view thereof.

FIG. 3 is a connection diagram thereof.

FIG. 4 is a side view showing a configuration of a general hair dryer with a housing cut away.

FIG. 5 is a front view of a main part of a crab.

FIG. 6 is an enlarged front view thereof.

[Explanation of symbols]

 1 Housing 1a Housing suction port 1b Housing discharge port 2 Fan 3 Motor 4 Heater 5 Heater support plate 6 Thermo switch 13 Thermo switch reversing type thermal reaction plate 16 Auxiliary heater

Claims (1)

[Scope of utility model registration request] 1. A housing having a suction port on one side and a discharge port on the other side, a fan for taking in air from the suction port and forming an air flow to blow out from the discharge port, and a ring-shaped arrangement in a flow path of the air flow. A heater installed to heat the air,
In a hair dryer having a thermoswitch having a reversing type heat-responsive plate arranged in series with the heater in a substantially central portion of a space surrounded by the heater, an auxiliary device connected in series to the heater and the thermoswitch. A hair dryer, characterized in that a heater is arranged in the vicinity of a reversing type heat responsive plate.